Clinical trials
General Population (no Specific Condition or Disease) clinical trials
Below are recruiting general population (no specific condition or disease) clinical trials, each written for real people, not researchers. We’re tracking 10,813 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT00807482Recruiting
Study of lung disease causes in primary ciliary dyskinesia
This study looks at how primary ciliary dyskinesia (PCD—a lifelong problem with tiny lung “sweepers”) affects the lungs. You may be able to join if you strongly seem to have PCD based on symptoms, or if you’re a healthy person with a close family member who has confirmed PCD.
Chapel Hill, North CarolinaAges Any age - NCT00704626Enrolling by invitation
Blood antibody tests in autoimmune brain and nerve diseases
This study looks at blood “auto-antibodies,” which are immune proteins that may attack the body, in people with certain brain and nerve conditions. It may help researchers better understand these diseases and how the immune system is involved.
Sacramento, CaliforniaAges 18 years+ - NCT00583817Enrolling by invitation
Endovascular repair for thoracic aortic aneurysms and dissections
This study tests whether repairing an enlarged or tearing (dissection) thoracic aorta using a catheter-based procedure can be safer for people who are high-risk for open surgery. It uses specialized stent grafts placed through blood vessels to seal the problem and prevent complications.
Boston, MassachusettsAges 18 years+ - NCT01186913Enrolling by invitation
Natural history study for severe combined immune deficiency (SCID)
This study follows children and adults with SCID and related immune disorders to understand how the illness behaves over time. It also helps researchers learn which testing results and genetic types of SCID match different treatment plans.
Birmingham, AlabamaAges Any age - NCT00585572Enrolling by invitation
Wisconsin Brain Donor Program for research after death
This program collects donated brain tissue and related samples after death to help researchers study brain diseases. You may be eligible if you’re an approved family member of a specific study participant, or you meet certain health and consent requirements.
Madison, WisconsinAges 18 years+ - NCT00186147Enrolling by invitation
Bone marrow grafting for leukemia and lymphoma
This study involves bone marrow cell grafting for people affected by leukemia or lymphoma. You may be eligible if you are a transplant recipient or a donor and you freely choose to take part.
Stanford, CaliforniaAges 18–70 - NCT00102544Enrolling by invitation
Tracking Devices to Find Abnormalities During Medical Procedures
This study tests technology that uses imaging scans to help doctors locate and reach abnormalities during surgical or interventional procedures. The goal is to make these image-guided procedures more accurate and safer for patients.
Bethesda, MarylandAges 18–120 - NCT00378924Recruiting
Cardiology health study using blood or cheek swabs
This registry collects health information and samples (a blood draw or cheek swab) from adults to help researchers study heart-related conditions. You may qualify whether or not you currently have heart disease, as long as you can safely provide a sample and consent.
Atlanta, GeorgiaAges 20 years+ - NCT01517425Enrolling by invitation
Using blood stem cells to study heart disease traits
This study uses your blood to create special lab cells (induced pluripotent stem cells) to better understand heart-related differences between people with coronary artery disease and generally healthy older adults. It may help researchers learn what biological traits are linked to heart risk and how those traits work.
La Jolla, CaliforniaAges 18 years+ - NCT00895271Enrolling by invitation
Making lab cell lines from skin biopsies in immune disorders
This study creates special lab cell lines from skin (or nasal) samples from people with immune system disorders and certain family members. It’s meant to help researchers build tools to better study these conditions using patient cells.
Bethesda, MarylandAges 2–85 - NCT01734122Recruiting
Focused radiation for essential or Parkinson tremor
This trial tests whether precisely targeted radiation to the brain can reduce tremors in people whose symptoms are not controlled enough by medication. It may help those who prefer radiation over deep brain surgery options.
Nashville, TennesseeAges 18 years+ - NCT02013284Enrolling by invitation
Stool test to see if gut microbes predict heart risk
This study looks at your gut bacteria (from a stool sample) to see whether they can help predict heart risk in people being checked for blocked heart arteries. Your results may help researchers understand who is at higher risk and why.
Rochester, MinnesotaAges 18 years+ - NCT01492231Enrolling by invitation
Study outcomes from endoscopy procedures at a digestive center
This trial collects information about how interventional endoscopy procedures affect patients and outcomes after the procedure. You may be able to join if you’re an adult and scheduled for an endoscopy procedure at the specified digestive disease center.
Orange, CaliforniaAges 18 years+ - NCT00004317RecruitingPhase 4
Treating Congenital Toxoplasmosis With Three Medications
This study tests a combination of three medications (pyrimethamine, sulfadiazine, and leucovorin) to treat toxoplasmosis—a parasitic infection passed from mother to baby during pregnancy. The goal is to see if early treatment prevents serious complications in infected infants.
Chicago, IllinoisAges Any age - NCT01453127Enrolling by invitationPhase 4
DaTscan scan for aging and movement brain conditions
This trial uses a special brain scan called DaTscan to study how certain brain conditions change with aging and over time. It may help researchers better understand movement and other neurodegenerative conditions and who may benefit from future treatments.
Rochester, MinnesotaAges 40–90 - NCT00001351Enrolling by invitation
Study of inflammatory disorders and immune system dysfunction
This is a long-term study that evaluates and follows patients with inflammatory conditions related to infections or immune system problems. Researchers at the National Institutes of Health want to understand these conditions better and may ask you to participate in related studies.
Bethesda, MarylandAges 2 years+ - NCT00001160Recruiting
Study of thyroid lumps and thyroid cancer
This study looks at people who have or may have thyroid nodules (lumps in the thyroid gland in your neck) or thyroid cancer, as well as family members who may have inherited a higher risk. It aims to better understand and diagnose these thyroid problems.
Bethesda, MarylandAges 6 months–98 years - NCT00593203Enrolling by invitation
Share a brain tissue sample during surgery
This study collects a small piece of brain tissue during people’s planned brain surgery. It may help researchers learn more about brain conditions and improve future care.
Nashville, TennesseeAges Any age - NCT07399262Recruiting
Music-based walking training for multiple sclerosis
This study tests whether walking to a steady beat of music can help improve your walking and balance. It is for people with mild to moderate multiple sclerosis who can walk but may need a little support.
Istanbul, ZeytinburnuAges 18–65 - NCT07400224RecruitingPhase 1/Phase 2
New PET imaging test for cancer, heart, or immune disease
This study tests a new type of PET scan using a special tracer called Al18F-NOTA-FAPI-04 to see if it can better detect cancer, heart disease, or immune system conditions. The goal is to find out how well this imaging method works for diagnosis or monitoring of these diseases.
BeijingAges 18–88 - NCT07400367Recruiting
Probiotics and lifestyle changes for fatty liver disease
This trial tests whether taking probiotics plus making lifestyle changes can improve fatty liver and metabolic health. You may qualify if you have liver fat and at least one sign of metabolic problems like high blood sugar or high blood pressure.
New Taipei CityAges 18–80 - NCT07400419Recruiting
Resistance exercise for transgender women starting estrogen therapy
This study looks at whether resistance training (like lifting weights) can help transgender women and gender-diverse people assigned male at birth who are starting estrogen and testosterone-blocking medications. It aims to see if exercise improves health and well-being.
Boston, MassachusettsAges 18 years+ - NCT07400523RecruitingPhase 3
Ribociclib for breast cancer with leftover disease after chemo
This trial tests ribociclib, a targeted therapy, for women with hormone receptor-positive, HER2-negative breast cancer who still have cancer cells in the breast or lymph nodes after initial chemotherapy. It aims to reduce the chance of cancer coming back.
Zhanjiang, GuangdongAges 18 years+ - NCT07400549Recruiting
Exercise plan study for people with high blood pressure, blood sugar, cholesterol, or uric acid
This study tests a tool that helps doctors create personalized exercise plans for people with conditions like high blood pressure, diabetes, high cholesterol, or high uric acid (the "Four Highs"). It could help you stay active and manage your health better.
BeijingAges 18 years+
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Common questions
- Are there clinical trials for general population (no specific condition or disease)?
- Yes. Clin2 currently lists 10,813 recruiting general population (no specific condition or disease) studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a general population (no specific condition or disease) trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a general population (no specific condition or disease) trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.